Worker ants walk in a straight line while finding food leaving behind a chemical scent so they won't get lost and find their way home. Worker ants usually find food at night in the spring and summer for the queens who lays eggs and reproduces. Sometimes ants can be active in winter too if their colony is warm enough or the outside temperature is not too low. For example at homes near the sink or any damp areas. Ants like most other insects love sugar. They can detect sugar using the chemo sense which are receptors located in their antennas. Helps them to find food. Carpenter ants feed on wood so they can damage homes by chewing on walls and build tunnels.